practical employed use is when a male lays his enourmous hammer inside a female.
I bet John McCain picked Sarah Palin as running mate so he could lay the hammer to her.
by hordichuk August 30, 2008
Get the lay the hammer mug.
To hit something in life hard. To make it happen and own it. To give something the beat down.
'I was bangin this chick last night and rocked her world! I layed down the hammer on her!'

'I can't believe she talked to you like that bro. You need to lay down the hammer.'
by Blagize August 16, 2011
Get the Lay Down the Hammer mug.